github - ghsa-c299-229x-w5c5

GHSA-C299-229X-W5C5

Vulnerability from github – Published: 2024-08-22 03:31 – Updated: 2024-09-11 18:31

Details

In the Linux kernel, the following vulnerability has been resolved:

spi: spi-zynq-qspi: Fix a NULL pointer dereference in zynq_qspi_exec_mem_op()

In zynq_qspi_exec_mem_op(), kzalloc() is directly used in memset(), which could lead to a NULL pointer dereference on failure of kzalloc().

Fix this bug by adding a check of tmpbuf.

This bug was found by a static analyzer. The analysis employs differential checking to identify inconsistent security operations (e.g., checks or kfrees) between two code paths and confirms that the inconsistent operations are not recovered in the current function or the callers, so they constitute bugs.

Note that, as a bug found by static analysis, it can be a false positive or hard to trigger. Multiple researchers have cross-reviewed the bug.

Builds with CONFIG_SPI_ZYNQ_QSPI=m show no new warnings, and our static analyzer no longer warns about this code.

Severity ?

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2021-4441"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-22T02:15:04Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: spi-zynq-qspi: Fix a NULL pointer dereference in zynq_qspi_exec_mem_op()\n\nIn zynq_qspi_exec_mem_op(), kzalloc() is directly used in memset(),\nwhich could lead to a NULL pointer dereference on failure of\nkzalloc().\n\nFix this bug by adding a check of tmpbuf.\n\nThis bug was found by a static analyzer. The analysis employs\ndifferential checking to identify inconsistent security operations\n(e.g., checks or kfrees) between two code paths and confirms that the\ninconsistent operations are not recovered in the current function or\nthe callers, so they constitute bugs.\n\nNote that, as a bug found by static analysis, it can be a false\npositive or hard to trigger. Multiple researchers have cross-reviewed\nthe bug.\n\nBuilds with CONFIG_SPI_ZYNQ_QSPI=m show no new warnings,\nand our static analyzer no longer warns about this code.",
  "id": "GHSA-c299-229x-w5c5",
  "modified": "2024-09-11T18:31:02Z",
  "published": "2024-08-22T03:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4441"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2efece1368aeee2d2552c7ec36aeb676c4d4c95f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3c32405d6474a21f7d742828e73c13e326dcae82"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ab3824427b848da10e9fe2727f035bbeecae6ff4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b9dd08cbebe0c593c49bf86d2012a431494e54cb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/df14d2bed8e2455878e046e67123d9ecb2e79056"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-4441 (GCVE-0-2021-4441)

Vulnerability from cvelistv5 – Published: 2024-08-22 01:30 – Updated: 2025-05-04 06:59

Summary

In the Linux kernel, the following vulnerability has been resolved: spi: spi-zynq-qspi: Fix a NULL pointer dereference in zynq_qspi_exec_mem_op() In zynq_qspi_exec_mem_op(), kzalloc() is directly used in memset(), which could lead to a NULL pointer dereference on failure of kzalloc(). Fix this bug by adding a check of tmpbuf. This bug was found by a static analyzer. The analysis employs differential checking to identify inconsistent security operations (e.g., checks or kfrees) between two code paths and confirms that the inconsistent operations are not recovered in the current function or the callers, so they constitute bugs. Note that, as a bug found by static analysis, it can be a false positive or hard to trigger. Multiple researchers have cross-reviewed the bug. Builds with CONFIG_SPI_ZYNQ_QSPI=m show no new warnings, and our static analyzer no longer warns about this code.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/df14d2bed8e245587…
	https://git.kernel.org/stable/c/2efece1368aeee2d2…
	https://git.kernel.org/stable/c/3c32405d6474a21f7…
	https://git.kernel.org/stable/c/b9dd08cbebe0c593c…
	https://git.kernel.org/stable/c/ab3824427b848da10…

Impacted products

Vendor

Product

Version

Linux

Affected: 67dca5e580f1e93a66177389981541cac208c817 , < df14d2bed8e2455878e046e67123d9ecb2e79056 (git)
Affected: 67dca5e580f1e93a66177389981541cac208c817 , < 2efece1368aeee2d2552c7ec36aeb676c4d4c95f (git)
Affected: 67dca5e580f1e93a66177389981541cac208c817 , < 3c32405d6474a21f7d742828e73c13e326dcae82 (git)
Affected: 67dca5e580f1e93a66177389981541cac208c817 , < b9dd08cbebe0c593c49bf86d2012a431494e54cb (git)
Affected: 67dca5e580f1e93a66177389981541cac208c817 , < ab3824427b848da10e9fe2727f035bbeecae6ff4 (git)

Linux

Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 5.4.182 , ≤ 5.4.* (semver)
Unaffected: 5.10.103 , ≤ 5.10.* (semver)
Unaffected: 5.15.26 , ≤ 5.15.* (semver)
Unaffected: 5.16.12 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-C299-229X-W5C5

CVE-2021-4441 (GCVE-0-2021-4441)

Tags

Sightings

Nomenclature